Effect of oxidation and modifiers on polypropylene crystallization

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[1] Kuksenko, E.S.
[2] Kerber, M.L.
[3] Shibryaeva, L.S.
[4] Filatov, S.N.
[5] Prudskov, B.M.
[6] Gorbunova, I.Yu.
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| 1901年 / Izdatel'stvo Nauka卷 / 87期
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The effect of ester modifiers [di-n-alkyl esters derived from o-phthalic acid and C7-C9 alcohol fractions; poly(propylene glycol adipate) dibutyl ester] on the polypropylene oxidation and crystallization was studied. The modifiers influence the size of the crystallization nuclei and the polypropylene crystallization rate. Various models were used for mathematical description of the process; of which the Avrami model appeared to be the most adequate. The ester modifiers strongly influence the resistance of polypropylene to thermal oxidation: introduction of poly(propylene glycol adipate) dibutyl ester; thermodynamically incompatible with polypropylene; leads to a considerable increase in the induction period of oxidation. © 2014 Pleiades Publishing; Ltd;
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